Battery cover



April z2 1924. Lam/:s

W. H. THORPE I BATTERY COVER Filed Oct. 30. 1922 :in 11e-nim:

William J Thorpe, y

am @A13/T @Hm nur To @ZZ 'whom it 'may (2n/www.'

it known that LTILLIM a, cxizen of he Unite@ Smes, residing et Mount Vernon? Y., have invent-ed eete'm new enc?. Usefu mpre'vmnents in Bntery Covers, m which the 'eowng is Speeif cnieu.

r resent invention Irentes te eleete belltel and s primary object is 'lle 'pro- /lslon oi means m Such n buttery Winch mil prevent he eleetl'olyie from creeping vom the Celis e the surrounding puns @if che battery, thus elmmtng he usual een@ sen and dei@rmfazon.

Another und im Nimmt object eenes's in Ae pmveou of menne wmreby e buv'iev'y of this type may be readjf Usu'izm'ec tu the erdnmy meer o1' with he minimum yoei; le me fem the p1 ,sent pasticu eombmef 1 i'. m, u, ne, 01.

to ibis en heyy ger e vel-zd.

is uw defstood the?, de neig coneer le :L seetonav. elevaifm ef er r my and. eo'v'er mth one fome el?? 1 and f efe Views snAm: "Le g. l showing muy.; ed beke,

s* lese drawn A e muy have edap te yecelve e. ,Jl v1"..L .1 L" m. a nelgh Sughi); .1. une gfoeve, e0 that Centinaia under pxeseme ing, the Tower Qoron ferm of au mverted @up femme which l under action of the acid.

Q Les lcover and surrounding the shank 6 which serves the same function as the cup 11. The shank' extends above its lead covering and is provided with a brass nut 7 threaded to shank 6 Which engages a lead covered brass cup 13 which in turn bears against the cup 12. Between the various cups and their adjacent members vaseline is pla' d for the purpose of preventing creeping of the electrolyte past these parts and the subsequent corrosion of these members.

F ig. 3 illustrates the form in which the lead covered head of the brass shank 6 is embedded in the jar 1. This form is especially desirable Wherefit is not possible to use a nut or cup on each end of the shank, such as in between cells where the bolt would naturally fall Within the Walls of the jar 1.

The form of bolt in Fig. 4 shows the brass shank 6 provided with a head 6 embedded in thejar and also provided with a lead sleeve 14 screwed over the shank. This may be necessary where the vnlczmizing temperature .of the hard rubber battery jar is suiiciently high to melt a lead or lead covered shank. `With this construction the lead parts are applied after vulcanization.

A lead cup is made use of because of thc relative softness of this material which allows itself 'to adapt itselt` to any irregularities in the member with which it is to make contact. Any other material which will also have these qualities and is acid resisting will obviously be satisfactory. A brass shank is used as that material is cheap and has snicient strength and may be readily covered with lead. However, I do not limit myself to this material.

It will be evident that the plastic acid resistingV material contained Within the peripheral groove of the jar serves not only to prevent creepage of the electrolyte, but also acts as a preservative for the soft rubber, which would otherwise rapidly deteriorate Throughout the specication and claims Where l have mentioned plastic acid resisting material, it is to be understood that this may take the form of either a-paste or a liquid.

, It may be found desirable to interpose a rubber or compound Washer between the bolt cups and the battery member adjacent thereto, in order to insure sealing of the plastic material within the cups. As a battery of this type often becomes heated, it is desirable to prevent escape of the consequently heated sealing material.

I claim 1. In combination, a battery including a jar and a cover therefor, a securing device penetrating one of said members, said device having a shank, a cup surrounding said shank, means to force contact between said cup and one of said batter' members and acid-resisting plastic material within said cup and contacting with one of said battery members.

2. The device of claim 1, said device having a head embedded in one of said battery members.

3. rl`he device of claim 1, said device having a head embedded in one of said battery members, said head being covered with an acid resisting material extending without the battery member.

4C. In combination, a battery including a jar and cover therefor, an aperture in one of said members, means securing jar and cover together passing through said aperture, and acid-resisting plastic material maintained in said apcrtnrearouml said securing means.

5. ln combination, a battery including a jar and cover therefor, a bolt device for removably securing the cover and jar together, means for maintaining an acid-resisting medium around said bolt 4at the joint between said jar and cover.

G. The device of 'claim 5 in Which said means comprise a cup on said bolt, a soft gasket encircling said bolt, nut means for clamping said gasket between said cu-Y and said cover, and acid-resisting plastic Ymaterial confined Within said cup .to prevent corrosive action on the soft gasket by any electrolyte from ythe battery.

7. The device of claim 5 with means for preventing creepage of electrolyte from the battery to said bolt comprising a groove in the top of said jar, a soft gasket in said groove, and acid-resisting moldable material in said groove around said gasket.

In testimonywhereof I have affixed my signature to this specification.

WILLIAM n. THoRrE. 

